when we're talking about the consulate in tripoli -- in benghazi, excuse me, officials say that in the wake -- in the leadup to this 9/11 attack, and arwa just mentioned these previous attacks and including the attack on the consulate, the state department made increased enharassments to improve security on the compound, more barriers, more cameras, additional armed guards. in addition, ambassador stevens had two armed guards in addition to three others and several militias on the compound, and what officials are saying is listen, we were adding improvements to this security based on those previous attacks which weren't very large, but they say they couldn't have foreseen, wolf, the kind of onslaught that happened on 9/11 and they don't know if they could have done anything to prevent it. >> elise, arwa, thanks very much. >>> just ahead, we show you where a new wave of anti-american protest is breaking. >>> today, cnn revealed the top ten heroes of 2012. each will receive $50,000 plus a shot at being chosen cnn hero of the year. cnn has been honoring every day heroes for six years runn